Fletcher Rifle Works HUB Direct Thread Adapter Features The Fletcher Rifle Works HUB Direct Thread Adapter is machined from stainless steel for long term corrosion resistance and strength under repeated mounting cycles. Its 1/2x28 thread pattern matches one of the most common muzzle threads found on rimfire and 5.56 caliber barrels making it a practical upgrade for shooters converting a direct thread setup to the quicker HUB interface. The 2 inch length and 1.5 inch diameter keep the adapter compact so it does not add unnecessary bulk or shift the balance of the host firearm. Stainless construction also means the adapter can handle the heat cycling that comes with repeated suppressed strings of fire. At 2.2 ounces this adapter is light enough that shooters will barely notice it is mounted between the barrel and the suppressor body. The HUB mounting system it supports is prized for allowing fast tool free suppressor changes between host firearms and this adapter is the piece that makes that swap possible on a 1/2x28 threaded muzzle. It is a straightforward functional accessory for anyone building out a modular suppressor mounting setup across multiple guns. This adapter is available for sale at GrabAGun for shooters standardizing their suppressor mounting hardware. Fletcher Rifle Works HUB Direct Thread Adapter Specifications Manufacturer: Fletcher Rifle Works Model: HUB Direct Thread Adapter Material: Stainless Steel Length: 2 Diameter: 1.5 Thread Pattern: 1/2x28 Width: 2 Weight: 2.2 oz Available At: GrabAGun